1、ANSI/ASABE AD500-1:2014 FEB2015 Agricultural tractors Rear-mounted power take-off types 1, 2, 3 and 4 Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone American Society of Agricultural and Biological Engineers ASABE is a professional and technical o
2、rganization, of members worldwide, who are dedicated to advancement of engineering applicable to agricultural, food, and biological systems. ASABE Standards are consensus documents developed and adopted by the American Society of Agricultural and Biological Engineers to meet standardization needs wi
3、thin the scope of the Society; principally agricultural field equipment, farmstead equipment, structures, soil and water resource management, turf and landscape equipment, forest engineering, food and process engineering, electric power applications, plant and animal environment, and waste managemen
4、t. NOTE: ASABE Standards, Engineering Practices, and Data are informational and advisory only. Their use by anyone engaged in industry or trade is entirely voluntary. The ASABE assumes no responsibility for results attributable to the application of ASABE Standards, Engineering Practices, and Data.
5、Conformity does not ensure compliance with applicable ordinances, laws and regulations. Prospective users are responsible for protecting themselves against liability for infringement of patents. ASABE Standards, Engineering Practices, and Data initially approved prior to the society name change in J
6、uly of 2005 are designated as “ASAE“, regardless of the revision approval date. Newly developed Standards, Engineering Practices and Data approved after July of 2005 are designated as “ASABE“. Standards designated as “ANSI“ are American National Standards as are all ISO adoptions published by ASABE.
7、 Adoption as an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by ASABE. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reac
8、hed by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. CAUTION NOTICE: ASABE and ANSI
9、standards may be revised or withdrawn at any time. Additionally, procedures of ASABE require that action be taken periodically to reaffirm, revise, or withdraw each standard. Copyright American Society of Agricultural and Biological Engineers. All rights reserved. ASABE, 2950 Niles Road, St. Joseph,
10、 Ml 49085-9659, USA, phone 269-429-0300, fax 269-429-3852, hqasabe.org ANSI/ASABEAD500-1:2014 FEB2015 Copyright American Society of Agricultural and Biological Engineers 1 ANSI/ASABE AD500P1:2014 FEB2015 Revision approved March 2015 as an American National Standard Agricultural tractors Rear-mounted
11、 power take-off types 1, 2, 3 and 4 Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone These materials are subject to copyright claims of ISO and ASABE. No part of this publication may be reproduced in any form, including an electronic retrieval syst
12、em, without the prior written permission of ASABE. All requests pertaining to ANSI/ASABE AD500-1:2014 MAR2015 standard should be submitted to ASABE. This standard was reviewed and approved for adoption by the ASABE Power and Machinery Tractors and Tractor Implement Interface/PTO Technical subcommitt
13、ees, and has been formally approved. This adoption along with the adoption with deviations of ISO 8759-1:1998 and ISO 8759-2:1998 and the identical adoptions of ISO 500-2:2004, and ISO 500-3:2004 replaced ASAE S203.14 and ASAE S513. Rear mounted PTOs are addressed in the ISO 500 adoptions, front mou
14、nted in the ISO 8759 adoptions. Adopted by ASABE December 2010; approved as an American National Standard January 2011; revised October 2011; revision approved by ANSI November 2011; replaced with adoption with deviations of ISO 500-1:2014 February 2015; approved by ANSI March 2015. Keywords: Cleara
15、nce zone, Master shield, Power take-off, Requirements, Safety, Speed, Tractors 0 Foreword 0.1 ANSI/ASABE AD500-1:2014, Agricultural tractors Rear-mounted power take-off types 1, 2, 3 and 4 Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone, is an ado
16、ption with deviations of the identically titled ISO 500-1:2014, Agricultural tractors - Rear-mounted power take-off types 1, 2, 3 and 4 Part 1: General specifications, safety requirements, dimensions for master shield and clearance zone, Deviations noted in the following Foreword sections pertain to
17、 those provisions where harmonization could not be achieved between ASABE and the International Standard. 0.2 ANSI/ASABE AD500-1:2014 gives general specifications, including speeds, safety requirements, the dimensions for the master shield, and clearance zones for rear-mounted power take-offs (PTOs)
18、 of types 1, 2, 3, and 4 on agricultural tractors with a track setting of more than 1 150mm (those with a track setting width of 1 150mm or less are covered in ASABE/ISO 500-2:2004). This scope is identical to the scope of ISO 500-1 except for: 0.2.1 The inclusion of over speed requirements 0.2.2 Re
19、ferencing ASABE/ISO 500-2:2004 in place of ISO 500-2. NOTE: Front mounted PTO is addressed in ANSI/ASABE AD8759-1:1998, Agricultural wheeled tractors Front-mounted equipment Power take-off and three-point linkage, which is the adoption with deviations of ISO 8759-1:1998. 0.3 Two normative references
20、 are listed in ISO 500-1:2014. The responsible ASABE committee has reviewed these references and approved the following deviation: 0.3.1 Replace ISO 5673-2, Agricultural tractors and machinery Power take-off drive shafts and power-input connection Part 2: Specification for use of PTO drive shafts, a
21、nd position and clearance of PTO drive line and PIC for various attachments with ASABE adoption ANSI/ASABE AD5673-2:2005 SEP2014, Agricultural tractors and machinery Power take-off drive shafts and power-input connection Part 2: ANSI/ASABEAD500-1:2014 FEB2015 Copyright American Society of Agricultur
22、al and Biological Engineers 2 Specification for use of PTO drive shafts, and position and clearance of PTO drive line and PIC for various attachments. Any reference to ISO 5673-2 in the printed portion of ISO 500-1:2014 shall be replaced by ANSI/ASABE AD5673-2:2005. 0.4 This standard has been approv
23、ed as an American National standard by ANSI (American National Standard Institute). The original content of ISO 500 and ISO 8759 was based on ASAE S203. 0.5 This standard deviates from ISO 500-1:2014 as follows: 0.5.1 Inclusion of the following references: 0.5.1.1 ANSI/ASABE AD6489-3:2004, Agricultu
24、ral vehicles Mechanical connections between towed and towing vehicles Part 3: Tractor drawbar 0.5.1.2 ASAE S207, Operating Requirements for Tractors and Power Take-Off Driven Implements 0.5.1.3 ANSI/ASABE S604.1, Safety for Power Take-off (PTO), Safety for Power Take-off (PTO), PTO Drive Shafts, and
25、 Power Input Connection (PIC) for Agricultural Field Equipment 0.5.2 Over speed requirements: 0.5.2.1 Tractors capable of driving the 540 r/min shaft in excess of 630 r/min, the 1000 r/min shaft in excess of 1170 r/min, and the 1300 r/min in excess of 1520 r/min shall also include a suitable warning
26、 of operation in excess of those speeds. 0.5.2.2 If a shiftable PTO is provided, a means shall be employed on the tractor to prevent over speeding of a type 1 tractor PTO shaft in excess of 630 r/min, a type 2 or 3 tractor PTO shaft in excess of 1170 r/min, or a type 4 tractor PTO shaft in excess of
27、 1520 r/min. 0.5.5 The safety for power take-off (PTO), PTO drive shafts, and power input connection (PIC) provisions specified in ANSI/ASABE S604 remain in effect. Text of ISO 500-1:2014, Agricultural tractors Rear-mounted power take-off types 1, 2, 3 and 4 Part 1: General specifications, safety re
28、quirements, dimensions for master shield and clearance zone follows. 1 Scope This part of ISO 500 gives general specifications, including speeds, safety requirements, the dimensions for master shield, and clearance zones for rear-mounted power take-offs (PTOs) of types 1, 2, 3, and 4 on agricultural
29、 tractors with a track setting of more than 1 150 mm (those with track setting width of 1 150 mm or less are covered in ISO 500-2). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated re
30、ferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5673-2, Agricultural tractors and machinery Power take-off drive shafts and power-input connection Part 2: Specification for use of PTO drive shafts
31、, and position and clearance of PTO drive line and PIC for various attachments ISO 6489 (all parts), Agricultural vehicles Mechanical connections between towed and towing vehicles ANSI/ASABEAD500-1:2014 FEB2015 Copyright American Society of Agricultural and Biological Engineers 3 3 Terms and definit
32、ions For the purposes of this document, the following terms and definitions apply. 3.1 power take-off PTO external shaft on the rear of the tractor to provide rotational power to implements 4 Specifications 4.1 The tractor rear power take-off (PTO) is classified into four types (see Table 1). 4.2 Th
33、e direction of PTO rotation shall be clockwise when viewed from behind the tractor except when a ground-driven PTO is operated with the tractor in reverse direction. 4.3 The nominal PTO rated rotational frequency can be realized by one or more engine speed ranges. Table 1 Characteristics of PTO type
34、s PTO Type Nominal Diameter mm Number and Type of Splines Nominal PTO Rated Rotational Frequency min-1 Recommended PTO Power at Rated Engine Speeda kW 1 35 6 straight splines 540 65 1 000b1102 35 21 involute splines 1 000 130 3 45 20 involute splines 1 000 300 4 57,5 22 involute splines 1 300 450 aD
35、etermined in accordance with IS0 789-1 or OECD Code 2. bThis option is not available in North America. 5 PTO-speed requirements for shiftable PTO 5.1 Should more than one ratio between the engine speed and the PTO rotation speed be provided, any change of ratio shall be indicated. In addition, speci
36、fic design measures shall be taken to ensure that unintentional changes of ratio, particularly in changing to a higher rotational speed, cannot occur. This safety device shall operate each time the PTO is engaged. 5.2 A means to indicate when the PTO is operating at which nominal speed shall be prov
37、ided. 6 Safety requirements 6.1 The PTO master shield, as shown in Figure 1 and Table 2, shall be supplied by the tractor manufacturer and shall be fixed to the tractor. If the same degree of safety protection is reached and the clearance zone is respected, equivalent protection devices (e.g. towing
38、 hook or clevis supports) can be used instead of the master shield. In this case, provisions shall be made for anchoring the restraining member of the PTO drive shaft guard. 6.2 If necessary, the PTO master shield or a part of the shield can be movable without detachment from the tractor to facilita
39、te attachment of the PTO drive shaft. The movable portion of the master shield shall be resistant to unintentional movement when in the operating position. The master shield can be made of flexible material. ANSI/ASABEAD500-1:2014 FEB2015 Copyright American Society of Agricultural and Biological Eng
40、ineers 4 6.3 If the PTO master shield can be used as a step, it shall withstand a vertical static load of 1 200 N without permanent deformation. 6.4 An additional non-rotating casing which fully covers the PTO can also be supplied with the tractor to cover the PTO when the PTO is not in use. 7 Dimen
41、sions for tractor master shield aperture and clearance zone of PTO The dimensions of the tractor master shield aperture and the clearance zone around the PTO shall be in accordance with Figure 1 and Table 2. Key 1 Hole a The clearance can be restricted by movable and/or detachable devices. The clear
42、ance zone on towing vehicles shall be in accordance with ISO 6489 (all parts) and ISO 56732. b Angle optional under consideration of clearance zone. c For coupling up the restraining member of the PTO drive shaft guard preventing guard rotation. Figure 1 Tractor master shield aperture and clearance
43、zone around PTO ANSI/ASABEAD500-1:2014 FEB2015 Copyright American Society of Agricultural and Biological Engineers 5 Table 2 Tractor master shield controlling dimensions for aperture and clearance zone dimensions Dimension PTO Type 1 2 3a4b min80 mm 80 mm 95 mm 105 mm min60 60 60 60min50 50 50 50 mi
44、n45 45 45 45SRrmax76 mm 76 mm 90 mm 90 mm kmin70 mm 70 mm 80 mm 80 mm m 5 mm 125 mm 125 mm 150 mm 150 mm n 5 mm 85 mm 85 mm 100 mm 100 mm p 10 mm 290 mm 290 mm 360 mm 360 mmb rmax76 mm 76 mm 90 mm 90 mm aFor tractors equipped with the PTO type 3 that can be adapted to also provide a PTO type 1 or 2,
45、 the master shield only needs to meet the specifications in Figure 1 and Table 2 for the PTO type 3. bFor tractors equipped with the PTO type 4 that can be adapted to also provide a PTO type 1, 2 or 3, the master shield only needs to meet the specifications in Figure 1 and Table 2 for the PTO type 4. Bibliography 1 ISO 789-1:1990, Agricultural tractors Test procedures Part 1: Power tests for power take-off 2 OECD code 2, OECD standard code for the official testing of agricultural and forestry tractor performance
